We feature two upsets per year, the most “noteworthy” and the most “lopsided”.

The most “noteworthy” upset is based on a net difference of pre-fight rating points, normalized by division.

This was not a big year for notable upsets, but the most noteworthy based on our standards was: Josh Sampo UD(3) Antonio Banuelos. For this win Sampo also earns the “most improved” award.

The most “lopsided” upset is based on the largest divisible difference between pre-fight rating points.

The upset that makes the notability cut is Ilir Latifi UD(3) Tony Lopez.

In the world of obscurity, quite possibility the biggest upset in history took place — assuming the previous records are correct (a main reason we have a notability requirement). On 9/8, a previously 0-3 fighter named Ben Santiago TKO’d Paulo Goncalves Silva, who was ranked and held a previous record of 18-7.